Caspian
Whenever he's in a good mood, Caspian will put he's arms around your waist and place soft kisses onto your neck.
Peter
Peter's a straight forward guy so whenever he feels like it, he'll plant a kiss on your lips.
Edmund
When the two of you are alone, Edmund loves to place random kisses on your cheeks.
Eustace
Being the gentleman he is, Eustace will place chaste kisses on your hands when in public.